Tire-filling machine.



E. OLIVER.

TIRE FILLING MACHINE. APPLICATION mum DEC. 23, 1911,

Patented Apr. 1, 1913 2 SHEETSQ-QHRT 1.

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E. OLIVER TIRE FILLING MACHINE. APPLICATION FILED BBQ-23., 1911.

2 SHEETSSHEBT 2.

Patented A101: 1, 1915.3.

EFZIRJE FELLING TEACHENE.

Learner- Application filed .Tiecemher 2S, 1911.

To all whom it may concern:

Be it known that I, ELM-ER Onivrn, a citizen of the United States, residing at Daytona, in the county of Volusia and State hit Florida, have invented certain new and useful Improvements in Tire-Filling Machines, of which the following is a specification.

My present invention pertains to tire-- filling machines; and it has tor its object to provide a simple, compact and etficient machine for filling tires, more particularly the tires of automobile wheels, with a hard substance. I

'With theforegoing in mind, the invention will be fully understood from the following description and claims when the same are read in connection with the drawings, accompanying and forming part of this specification, in which:

Figure l is a view illustrating my novel machine in side elevation and also showing the arrangement of the machine relative to a tire to be filled. Fig. 2 is a view, partly in vertical section and partly in elevation of thesame. F19. 3 1s a view taken in the plane indicated by the line 3-3 of Fig. l and showing the interior of the hopper and the worm screw for feeding the hard filling substance forward from the hopper. l is an enlarged detail View of the pressure gage comprised in the machine.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

In Figs. 1 and 2, 1 is a wheel rim, and 2 is a tire, of rubber or other suitable resilient material; the said tire having a filling tube 3"that extends through the rim as clearly shown in Fig. 2.

My novel machine isdesigned to be connected to the tube 3 and to force the hard filling substance through the said tube and into the tire. Among other elements the machine comprises an Innright t fixed on a suitable support 5 and having a socket 6 and a lubricant duct 7 leading thereto. Also fixed on the support 5 is a hopper 8 which is preferably, though not necessarily, formed in two sections; the said section being clamped together, as at 9. The bottom of the hopper describes a part of the circle, Fig. 3, and the hopper is provided its ends with tubular projections 10 and 11. It will also be noticed here that the upright t has a base 12 and that the base 13 of the Specification of Letters Patent.

. in Paton ten. her. 1,

Serial No. 667,565.

hopper abuts against said base 12, this with a view of lending increased stabilit), to the hopper and strength to the machine as a whole.

Threaded into the forward. tubular projection ll of the hopper is cylindrical. and

sinooth-iforemember that is provided atits forward. end with a cap '10 having. a threaded nipple l6. lhis nipple serves for the connection of a "l-coupling 17 on the depending arm of which is a relief valve or cook 18. Connected to the opposite end of the coupling 17, with reference to the nipple 16, is the casing 19 of a pressure'gage, and connected, in turn, to the said casing-19 is a cut-off valve or cook 19 designed to be connected with the filling tube 3 of the tire.

The pressure gage combines in addition to the casing 19 a piston 20 having a depending and apertured cut-oil portion 21. The rod of piston 20 extends upward through a frame 23 and is provided. at 24 with an abutment between which and the top of the frame a spring 25 is interposed. The said spring serves by exerting downward pressure on the abutment 24 t0 yieldingly hold the piston 20 and the apertured cut-cit 21 against upward movement. When, however, the pressure in the casing becomes exssive such pressure serves to raise the piston 20 and the cut-cit 21 against the action of the spring 25, whereupon the said cutoil diminishes the size of the passage through the casing 19 and con sequently lessens orcuts oil the supply of the hard filling SillDSlilIlCQj to the tire. Attention is also di ected here to the act that when the tire is led and a certain predetermined pressure is therein. contained the cut-oil 21. will close communication between the tire and. the means best shown in Fig. 2 for supplying the filling substance under pressure to the tire.

When the cut-ollj' valve partially or wholly closes, the reliei valve 18 may be opened to permit of the discharge of the feeding ma.- terial into 'a suitable receptacle, thus preventing possible damage to the apparatus before the feed screw canbe stopped, and obviating the necessity of immediately throwing said screw out of action.

The means referred to comprises a worm screw 80 rotatable about its axis in the hopper bottom and the cylindrical. section The said worm screw is carried by shaft 31. that extends rearward through the tubular worm screw as occasion demands.

The shaft 31znay be rotated by any suitable means to rotate the screw 30. 1 prefer, however, to effect the rotation of the said shaft through the medium oi a sprocket belt (not shown) connecting a suitable source of power and a sprocket on the shaft.

In practice the machine being connected tothe filling tube 3 ofthe tire, and the shaft 31 and the worm screw 30 being rotated, the hard fillin substance is supplied to 'thehopper 8 w ereupon such substance will be forced forward by the worm screw and into the tire. This will be continued until the filling tube is tilled under the pressure de sired when, as before described, the cut-off 21' of the pressure gage will isolate the tire from the filling means. The raising of the abutment 24 or the pressure gage will apprise the operator of the machine that the tire is charged to the extent desired, and the tire is then detached from the machine.

I have entered. into a detailed descripgear 33 fixed 'tion of the construction and r lative ar rangement of the parts embraced in the present and preferred embodiment of my invention in order to impart a full, clear and exact understanding of the said embodiment. 1 do not desire, however, to be understood as confining myself-to the specific construction and relative arrangeiuei'it of parts as such changes or modifications may be made in the future practice of the invention as fairly fall within the scope of the invention as claimed.

Having described my invention, what I claim and desireto secure by. Letters l.atent, is

.1. A machine for filling tires, comprising a suitably supported hopper, an upright located in rear of the same, a cylindrical sec tion extending forwardly from the hopper, a pressure gage connected with the forward end of the cylindrical section and adapted to be connected with the tire to be filled; said gage including a spring-pressed piston and an apertured cut-0ft carried by said piston; a worm screw rotatable about its axisin the bottom of the hopper and the oy-' lindrical section and a shaft fixed with respect to the worm screw and extending rearward from the hopper and having a thrust bearing against the upright located in rear of the hopper.

2. A machine for filling tires, comprising ahopper having a discharge outlet, a feed screw operating in said hopper, a feed pipe leading from the outlet, a manually operable cut off valve in said pipe, a pressure controlled valve in said pipe between the hopper and first-named cut-oil valve.

. 3. A machine for filling tires comprising a hopper, a feed screw operating therein, a feed pipe leading from. the hopper outlet and adapted for connection with a tire, and a cut oil valve in said feed pipe controlled by the pressure of the material in the tire to control the feed of said material and cut off the feed thereof when the pressure in the tire reaches a predetermined degree.

4. A machine for filling tires comprising a hopper, a feed screw operating therein, a feed pipe lcadingfrom the hopper outlet and adapted for connection with a tire, a cut-cit valve in said pipe and adapted to be closed by backpressure of the material when the pressure in the tire reaches a predetermined degree, and a spring opposing resistance to the closing movement of said valve.

5. A machine for filling tires comprising a hopper, a feed screw operating therein, a feed pipe leading from the outlet of the hopper and adapted for connection with a tire, a cut-oli valve in said pipe adapted to.

be closed by back pressure of the material when the pressure in the tire reaches a predetermined degree, a spring for resisting closing movement cfsaid valve, and means regulating the resistance of said spring.

6. A machine for filling tires comprising a hopper, a feed screw within. the hopper, a feed pipe leading from the hopper outlet and adapted for connection with a tire, a manually operable cut off valve in said pipe,

a relief valve in said pipe between said out off valve and the hopper and a pressureeontrolled valve in,sa1d pipe between said manuallyv operable cut-ofi valve and the said relief valve; I

In testimony whereof I aliix my signature in presence of two witnesses.

ELMER OLIVER.

Witnesses: l

' G-sonon F. CAswELL,

G. H. WILKINS N. 

